I disagree. I do believe that a Digital repeater system requires much more attention then an Analog. You can get away with a lot more on an Analog system then the Digital Dstar system. Just look at the specs of a Dstar system compared to an Analog.
To avoid any interference whatsoever, we have tried to eliminate any possible RF getting into the repeater system. Thus, the shielded CAT5 connection. I am running an 120watt amplifier on our system here. Our Power Supply tends to get a little hot. If we don't control the temperature, we notice the garble steadily on our system. If it's cool everything works excellent. Just my opinion! KE5KAF